Piston-ring.



T. C. HUGHES.

PISTON RING. APPLICATION FILED JUN-E 3.1915.

Patented Oct. 8, 1918.

[NV NTOR.

WITNESSES mamas.

I and is particularly TYRE o. nosnns, or worse,

PISTON-RING.

Application filed June a, 1915.

T 0 all whom it may concern:

Be it known that I, TYRE C. citizen of the United States, residing atTulsa, in the county of Tulsa and State of Oklahoma, have invented acertain new and useful Improvement in Piston-Rings, of which thefollowing is a specification.

My invention relates to improvements in piston rings. It relatesparticularly to transversely divided piston rings.

The object of my invention is to provide a novel construction of pistonring of the transversely divided type, which will not permit leakagepast it as it opens when the ring or cylinder becomes worn.

My invention is adapted for various uses, adapted for use in steamengines and automobile engines of the explosive type.

The novel features of my invention are hereinafter fully described andclaimed.

In the accompanying drawing, which illustrates the preferred embodimentof my 111- vention, 4

Figure 1 is a view looking at one edgeof the ring, the ring being in itsopen position,

Fig. 2 is a view looking t of the ring.

Fig. 8 is an edge view of the ring in the closed position and applied toa piston which is shown in dotted lines.

Fig. 4: is an enlarged the divided side 1 perspective. of the endportions of the ring, shown in, the open position.

Fig. 5 is an enlarged cross section on the line 5-5 of Fig. 3. p s Fig.6 is an enlarged cross section on the line 6-6 of Fig. 3.

Similar reference characters designate similar parts in the difierentviews.

The transversely divided ring 1 is provided at one end and in the edge 2and outer periphery with a notch 3, preferably having a transverselybeveled surface which extends from near the outer periphery of the ringobliquely to the edge 2. e i

The other end of the ring is provided with a projection 42 which is,preferably, provided with a transversely beveled surface 5 fitted to thebeveled surface of the notch 3, the projection 4 being fitted to thenotch 3 so as to fillthe same when the ring is mounted on the piston 6,shown in dotted ,lines inv Fig. 3, The edge and outer Specification ofLetters Patent. i

Humans, a

' projection 9. "The? fills the notch8 and inner periphery respectivelyopen, but'therewill be no as the ends of the ring overlapeaoh other,there being .no open passage other side.

the cylinder; but

surface of the OKLAHOMA, ASSIGNOR or onnnatrro Jonnn a'ansson, onoonconn, NEW HAMPSHIRE.

send n 31,8541

Feff ted (ices; i918.

projection 4 form extensions ofithe edge 2 and outer periphery Aofjthe-ring.

Theend of the ringhavingthg pmj I 4 is provided in the edge 7 andinnerperiph- 1 eryjo'fjthe ring 1 withfa notch-.8, disposed in steppedrelationship "to the projection, d, and which-has fitted to it'aprojection 9 at theend of the'ring having'the notch? The notch8 ispreferably "provided with; atransbeveled-surface. 10 onflthe'outersideof the.

beveled surface "of the versely b'eveled surface fitted to a similarlynotch 8 extends fromfnear the middle of the inner periphe'ry obliquely'to the edge 7 of the ring. .c-The notch 8-;does'not extend to the outerperiphery of the ring, and the cry of the ring. The projection 9completely when thering is-fully closed, asshown-in Fig. 3, and'itsouter edge and inner surface-[form extensions of the edge 7, of therings Y By reason offlthe constructionfdescribed,

when the ring i's'mounted in the groove 11,

shown in 'dottejd lines in a cylinder, notshown,

in Fig. 3, and fitted 1 the projections 4 1 notch 3 doesnot extend tothe inner periphand 9 will respectively overlapand fit recessed portions3' and p e As the ring or piston wears, the ring will leakage as longmay pass from Upon wear ofthe ring, or of onepslde of the ringv to the Ty the cylinder, th 'ringfwill expand slightly,

and will not be a perfeot circle. cause the joint ofthe ring to scratchor score expansion of the ring, a small hole extends This would forth'ec fact that, upon the i from theinneritothe outer's'ide ofthe ringat the middle of its j oint, due to the employ. ment of the twobevelednotches. Oil is scraped Jfromthe cylinder .walland passes into thishole, from which itisagain thrown against the cylinder wall, therebykeeping the joint well oiled, so' that scoring or scratching' -of thecylinder is prevented. i

Ido not limit my. invention to the structure shown and described,as'modifications,

Within the scope, of the appended ciaim,

maybe madewithout departing from the I spirit of myiinvention.

What .I' claimiszi d j e I 3 Atransversely divided piston ring having gemini inner pa and the em in m away mwm of the outer periphery and oneeilga (1f the -1 and the other projection forming an extension of theother edge and inner psriphery of the ring.

In (my whereof I have signed my a to this specification.

Y i 1-? G. GS.

